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Re: st: multinomial multilevel analysis in Stata


From   Rosie Chen <jiarongchen2002@yahoo.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: multinomial multilevel analysis in Stata
Date   Mon, 17 Oct 2011 11:14:20 -0700 (PDT)

Nick, thanks very much for helpful response. 


Rosie



----- Original Message -----
From: Nick Cox <n.j.cox@durham.ac.uk>
To: "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Cc: 
Sent: Monday, October 17, 2011 6:06 AM
Subject: RE: st: multinomial multilevel analysis in Stata

This is one of the most frequent questions on this list. There are many answers, of which my favourite is to use -poisson- or -glm, link(log)- i.e. use a link function that indulges zeros in the data, not a transformation. However, if the zeros arise from some quite distinct process, you may need something more complicated. 

Nick 
n.j.cox@durham.ac.uk 

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Rosie Chen
Sent: 15 October 2011 15:18
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: multinomial multilevel analysis in Stata

Thank you, Cam. I will read the articles mentioned below. What would you suggest for dealing with zero values when log transforming data? 


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